压电-电磁复合式俘能器设计及能量收集测试

发布时间：2018-01-30 14:11

本文关键词： 超级电容输出功率充电时间带宽振动　出处：《压电与声光》2016年06期 　论文类型：期刊论文

【摘要】：设计了一种压电-电磁复合式俘能器,利用机电耦合状态方程推导了输出功率表达式。应用试验测试对比分析了压电式、电磁式、复合式俘能器的输出特性,结果表明,复合式俘能器的3dB带宽比压电式、电磁式俘能器分别增大了67%、25%,最大功率提高了38%、118%。设计了压电-电磁复合式俘能器能量收集电路,分别利用LTC3588、LTC3108芯片收集压电俘能单元、电磁俘能单元输出的电能,并用超级电容存储。分别应用3种俘能器进行超级电容充电测试,结果表明,复合式俘能器的充电时间比压电式、电磁式俘能器分别减少了29%和52%。
[Abstract]:A piezoelectric / electromagnetic hybrid energy capture device is designed, and the output power expression is derived by electromechanical coupling state equation. The output characteristics of piezoelectric, electromagnetic and composite energy capture devices are compared and analyzed by means of experimental tests. The results show that the 3 dB bandwidth of the composite energy capture is larger than that of the piezoelectric type, and the electromagnetic energy capture increases 67% and 25%, respectively, and the maximum power is increased by 38%. The energy collection circuit of piezoelectric / electromagnetic composite energy capture unit is designed. The piezoelectric energy capture unit is collected by LTC3588 / LTC3108 chip and the electric energy output by electromagnetic energy capture unit is obtained. The supercapacitor storage is used to test the charging time of the composite energy capture device by using three kinds of energy capture devices. The results show that the charging time of the composite energy capture device is 29% and 52 percent less than that of the piezoelectric type and the electromagnetic type energy capture device respectively.
【作者单位】：北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家“八六三”计划基金资助项目(SS2013AA041104)
【分类号】：TM619
【正文快照】： 0引言随着传感器和无线传感网络的发展,为解决低功耗微器件的供电问题,振动俘能技术成为研究的热点。按照俘能机理的不同,振动型俘能器可分为压电式、电磁式和静电式3类[1]。压电式和电磁式俘能器因具备结构简单、机电耦合系数大、无需外接电源等优点而备受关注。Andosca等[2]

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